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(11)

EP 2 654 932 A1

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(43) Date of publication: 30.10.2013 Bulletin 2013/44 (21) Application number: 11794581.6 (22) Date of filing: 01.11.2011

(51) International Patent Classification (IPC):  B01D 69/12(2006.01) B01D 67/00(2006.01) B01D 71/56(2006.01) (86) International application number: PCT/US2011/058765 (87) International publication number: WO 2012/087428 (28.06.2012 Gazette 2012/26)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 21.12.2010 US 974054 (71) Applicant: General Electric Company Schenectady, NY 12345 (US)	(72) Inventor: NIU, Qingshan, Jason Excelsior MN 55331 (US) (74) Representative: Szary, Anne Catherine  GPO Europe GE International Inc. The Ark 201 Talgarth Road Hammersmith London W6 8BJ London W6 8BJ (GB)